1976 Scamp fuel gauge problems

whitepunkonnitro said
I know it's more work and money than you want to spend, BUT, the best possible way to fix that car would be to keep the 72 cluster as is, and swap out the dash harness for a 75 style one. You MAY need to change the position of some of the pins on the bulkhead connector to correspond with the underhood harnesses, so some schematic studying would be a good idea, but that 76 only stuff is very hard to find in good, working order.
I do have a perfect dash harness if you decide you want to go that way.

What I'm thinking is find out what pin does what and wire directly to the corresponding gauge or light from the plug. If I don't want to cut, splice, add wire, and confuse myself in the future, I can buy one on eBay, but it's $150 before shipping and at that rate I could've bought a restored cluster for $150 with free shipping. I have the functional fuel gauge installed in the 76 cluster, but nothing is happening due to the circuit board being in such terrible shape. I think I'm gonna try to clean it up and touch up the soldering at the pins to see if that brings any life to anything. But for the next couple months, it's still not my car; I just made the first for 5 $400 payments yesterday. This car also has a major rust problem and the a/c is disassembled and put in the trunk, but it is registered and driven every now and then. But right now my main thing is to get the gauges working again and then I'll deal with the rest.